KR101472358B1 - Clinging paint for road marker - Google Patents

Abstract

The present invention relates to a fusion-type paint for road marking. The fusion- type paint for road marking comprises a hydrogenated petroleum resin, an ester resin, and a reinforced resin at a specific ratio, thereby providing a dry paint film which does not generate crack or is not delaminated even in severe temperature difference according to a season. Also, the paint has less abrasion caused by traffic flow, increased elasticity, and excellent adhesive strength to concrete. Accordingly, the present invention can improve visibility of road marking and can increase stability of vehicles and a pedestrians by increasing the retention period.

Description

{CLINGING PAINT FOR ROAD MARKER}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a welding type paint for road marking, and more specifically to a welding type paint for road marking which can provide a road mark having excellent wear resistance, stretchability, adhesive strength and visibility.

According to KS M 6080, the coating material for road marking is used as a raw material for pigments, resins, glass balls, and filling materials. The above paints are classified into the following four types according to the difference in properties and construction methods. Specifically, the paint can be classified into one kind of room temperature drying type paint, two kinds of water-soluble paint, three kinds of heating type paint and four kinds of fusion type paint.

Four types of fusion coatings can be formed by applying a paint to a road surface by applying heat to the road surface during cooling, and cooling the coated film to form a coated film firmly adhered to the road surface, which is the most frequently used paint for road surface marking. These four kinds of welding paint are classified into No. 1, No. 2 and No. 3 depending on the content of the glass beads. Specifically, the four types of fusion-type paints are those which contain 15 to 18% by weight of glass beads in a powdery phase, and 2, which contains 20 to 23% by weight of glass beads in a powder coating, % Or more.

There is a problem that the road surface mark obtained from such a fusing paint has a problem that cracks are generated or peeled off from the road surface due to a significant difference in temperature due to seasonal changes, and there is a problem that the road surface is worn out by the passage of the vehicle. Therefore, the existing fusing paint has to be repaired continuously at regular intervals, so there is a risk of harming the safety of the vehicle and the pedestrian due to the non-economic, low visibility of the road marking.

An object of the present invention is to provide a welding type paint for road marking which can provide a road surface mark having excellent abrasion resistance, stretchability, adhesive strength and visibility.

In order to attain the above object, according to one embodiment of the present invention, a sealable paint for road marking comprises 14 to 16% by weight of a hydrogenated petroleum resin, 3 to 6% by weight of an ester resin and 2 to 4 By weight.

In the above, the hydrogenated petroleum resin may be a hydrogenated dicyclopentadiene resin. The ester resin may be any one selected from the group consisting of a hydrogenated hydrocarbon rosin ester resin, an acrylic rosin ester resin, a disproportionated rosin ester resin, a dibasic acid modified rosin ester resin, a polymerized rosin ester resin, a phenol modified rosin ester resin, Lt; / RTI > The reinforcing resin may be any one selected from the group consisting of a styrene-ethylene-butylene-styrene copolymer, an ethylene vinyl acetate copolymer, an amorphous poly-a-olefin resin and a mixture thereof.

The coating material may further include 10 to 40% by weight of beads based on the total weight of the entire coating material. In one example, the beads may include glass beads having a refractive index of 1.5 to 1.6 and glass beads having a refractive index of 1.7 or more at a weight ratio of 70:30 to 50:50. In this case, the beads may exhibit excellent retroreflective brightness even when used in an amount of 15 to 30% by weight based on the total weight of the entire paint.

Hereinafter, the present invention will be described in more detail.

In another embodiment of the present invention, the adhesive paint for road surface marking comprises 14 to 16% by weight of a hydrogenated petroleum resin, 3 to 6% by weight of an ester resin and 2 to 4% by weight of a reinforcing resin based on the total weight of the total paint.

The hydrogenated petroleum resin serves to fix an inorganic substance such as glass beads and pigments in a coating film obtained from a fusion-type paint together with an ester resin and a reinforcing resin. In the case of a fusion paint using a petroleum resin for fixing inorganic particles such as glass balls and pigments, cracks are generated due to a severe temperature difference and the paint is peeled off from the road surface, resulting in poor weatherability. On the road surface having poor durability and poor visibility Lt; / RTI > However, the hydrogenated petroleum resin and the ester resin are excellent in mutual complementarity, so that cracks do not occur even at a severe temperature difference, and inorganic substances such as glass balls and pigments are firmly fixed, thereby improving the visibility and long-term preservability of the road surface mark.

As the hydrogenated petroleum resin, a hydrogenated dicyclopentadiene hydrocarbon resin obtained by polymerizing and hydrogenating dicyclopentadiene can be used. As one example, the hydrogenated petroleum resin may be SU-100 manufactured by Kolon Industries Co., Ltd., which is commercially available.

Examples of the ester resin include hydrogenated hydrocarbon rosin esters, acrylic rosin esters, disproportionated rosin esters, dibasic acid modified rosin ester resins, modified rosin esters, acid modified rosin esters, polymerized rosin esters, phenol modified rosin esters, and mixtures thereof. As one example, Foral (TM) 85-E available from EASTMAN CHEMICAL COMPANY, which is commercially available, can be used as the ester resin.

The reinforcing resin may be a synthetic resin added to reinforce elasticity, flexibility and adhesiveness of the hydrogenated petroleum resin and the ester resin. As such a reinforcing resin, any one selected from the group consisting of a styrene-ethylene-butylene-styrene copolymer, an ethylene vinyl acetate copolymer, amorphous poly-alpha-olefins and mixtures thereof may be used . As an example, Affinity-1900 from DOW CHEMICAL COMPANY, which is commercially available, can be used as a reinforcing resin.

In particular, the hydrogenated petroleum resins, ester resins, and reinforcing resins are used in a specific amount, and cracks are not generated or peeled even in severe temperature differences depending on the seasons, less abrasion due to communication of the vehicle, increased stretchability, It is possible to provide a coating film having excellent adhesion to concrete. Specifically, the above-mentioned effect can be obtained by using 14 to 16% by weight of the hydrogenated petroleum resin, 3 to 6% by weight of the ester resin and 2 to 4% by weight of the reinforcing resin based on the total weight of the total paint.

The above-mentioned fusion-type coating material may further contain an inorganic substance in addition to the above-mentioned components. Examples of the inorganic substance that can be included in the fusion-type coating material include beads, pigments, fillers, and other additives.

The bead may be one capable of ensuring visibility by retroreflecting light from a headlight of a vehicle. Examples of such beads include glass beads and the like.

The beads may be contained in the fusion-type coating material in an amount of 10 to 40% by weight based on the total weight of the whole coating material. Generally, as the content of beads increases in the fusion-type coating material, the retroreflective brightness increases and visibility can be improved. However, if the content of the beads is excessively increased, the adhesive strength of the road marking is lowered, and the beads and the like may be discolored in the process of melting the fusion-type paint.

On the other hand, Applicant devised a method capable of increasing the reflex reflection luminance while maintaining the bead content at an appropriate level. When the glass beads having the bead refractive index of 1.5 to 1.6 and the glass beads having the refractive index of 1.7 or more are mixed and used, the retroreflective brightness can be increased while reducing the amount of beads used. In particular, when the mixing ratio of the glass beads having the refractive index of 1.5 to 1.6 and the glass beads having the refractive index of 1.7 or more is adjusted to a weight ratio of 70:30 to 50:50, the beads are added in an amount of 15 to 30% by weight or 15 to 25% Even if it is used in weight%, the retroreflective brightness can be remarkably improved. The upper limit of the refractive index of the glass beads having a refractive index of 1.7 or more is not particularly limited and may be adjusted to, for example, 2.4 or less or 2.0 or less.

The pigment may include a coloring pigment for imparting color to the paint or a fill pigment for controlling physical properties such as strength and viscosity of the paint by increasing the weight of the paint. As the pigment, for example, titanium dioxide can be used.

The pigment may be used in an amount of 4 to 10% by weight based on the total weight of the entire paint, but is not limited thereto.

The filler may be added to the coating material to increase the abrasion resistance of the coating film, to increase the frictional force due to the protrusion, and to improve the visibility during the daytime due to irregular reflection.

Examples of the filler include silica, dolomite, talc, calcium carbonate, magnesium carbonate, barium sulfate, clay, kaolin, mica, diatomaceous earth, silica-based minerals or mixtures thereof.

The filler may be used in an amount ranging from 10 to 55% by weight based on the total weight of the entire coating material for the above-mentioned effect, but is not limited thereto.

In addition to the above-mentioned components, the above-mentioned fusion-type coating material may further include components commonly used in the art to which the present invention belongs. The fusing coating material may further include, for example, a plasticizer, a wax, a thixotropy, an antioxidant, a weathering stabilizer, a processing aid, and the like.

The fusing paint can provide a road surface mark by a method commonly used in the technical field of the present invention.

The sealable paint for road surface marking according to an embodiment of the present invention can provide a coating film including a specific amount of hydrogenated petroleum resin, ester resin and reinforcing resin, which does not crack or peel even in severe seasonal temperature differences . Further, the paint can provide a coating film having less wear due to communication of the vehicle, having increased stretchability, and having an excellent adhesive force to concrete. As a result, the stability of the vehicle and the pedestrian can be increased by improving the visibility of the road surface mark and increasing the storage period.

Hereinafter, embodiments of the present invention will be described in detail so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

[ Experimental Example  One: Fusion type  Characteristic evaluation of paint]

Using the compositions shown in the following Table 1, the fusion-type coating materials according to Examples and Comparative Examples were prepared, and the properties of the fusion-type coating material were evaluated by the following methods.

Example 1 Example 2 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 Petroleum resin (R-1100S) 0 0 0 0 0 0 15 15 Hydrogenated petroleum resin (SU-100S) 15 15 15 15 15 15 0 0 Ester resin
(Foral (TM) 85-E) 3 6 2 7 3 3 3 6 Reinforced resin (Affinity 1900) 3 3 3 3 One 5 3 3 By Revolutions
Night reflex reflection luminance ⁽¹⁾
(mcd / lxm ² ) 20 million 284 298 23 292 148 122 32 84 50 million 31 35 18 34 19 17 18 21 Concrete Adhesive Strength ⁽²⁾ (MPa) 1.8
(Good) 2.1
(Good) 1.2
(Bad) 2.0
(Good) 1.5
(Good) 1.3
(Bad) 1.0
(Bad) 1.5
(Good) Weatherability ⁽³⁾ 0.01
(Good) 0.03
(Good) 0.03
(Good) 0.07
(Bad) 0.02
(Good) 0.03
(Good) 0.03
(Good) 0.08
(Bad) Low temperature impact ⁽⁴⁾ Cl3
(Good) Cl3
(Good) Cl3
(Good) Cl3
(Good) Cl1
(Bad) Cl3
(Good) Cl3
(Good) Cl3
(Good) Pollution resistance ⁽⁵⁾ Good Good Good Good Good Bad Good Good

(Unit:% by weight based on total paint weight)

(1) Night-time retroreflective brightness (unit: mcd / lxm ² ) according to the number of revolutions: A fusion-type coating material was prepared using the composition shown in Table 1, and a glass bead was sprayed onto the coating film obtained from the fusion- drop-on. Then, 200,000 rotations and 500,000 rotations were carried out with the KS abrasion resistance test method, and the luminance values were measured at the respective rotation values to obtain the nighttime retroreflective luminance values. The higher the rotational speed, the higher the brightness value is as the glass balls applied to the coating film are not detached and fixed firmly.

(2) Concrete Adhesive Strength (unit: MPa): The adhesive strength of the fusion-type coating material of the concrete or comparative example to concrete was measured according to SPS-KTS.1102-1890 standard. When the bonding strength is 1.5 MPa or more, it is displayed as good, and when it is less than 1.5 MPa, it is displayed as bad.

(3) Weatherability: The coating film obtained from the fusing paint of Example or Comparative Example according to KS M 6080 standard was irradiated with QUV-B type for 200 hours to measure the luminance deviation to evaluate the weatherability. If the chromaticity deviation is 0.05 or less, it is displayed as good.

(4) Impact resistance at low temperature: A specimen having a diameter of 5 cm and a height of 2.5 cm was prepared according to the KS M 6080 standard by using the fusing paint of Examples or Comparative Examples. Then, a steel ball having a height of 2 m was dropped on the specimen at a low temperature to evaluate whether the specimen was cracked or cracked.

When 66.8 g of steel balls were dropped at 0 ° C, at least 6 of the 10 specimens were marked as Cl1 grade when they were broken or free of cracks, and 66.8 g of steel balls were dropped at -10 ° C, Or no crack, and a steel ball of 110 g was dropped at -10 ° C., and if more than 6 of 10 specimens were cracked or cracked, they were labeled as Cl 3 grade.

(5) Stain Resistance: A 200 × 400 mm asphalt sample was coated with the fusion-type coating material of the example or comparative example, and the surface of the coating film was arbitrarily contaminated at a temperature of 30 to 40 ° C. and then the contaminated part was cleaned with a clean cloth When wiped off, it is marked as good when the contaminated part is removed, and it is marked as bad when it is not removed.

Referring to Table 1, it was confirmed that when the hydrogenated petroleum resin was used together with the ester resin as in Examples 1 and 2, the ability to fix the sprayed glass be improved, and excellent nighttime retroreflective brightness was obtained. However, as in Comparative Examples 5 and 6, it was confirmed that when the petroleum resin is used, the glass beads easily fall off and the sufficient nighttime retroreflective brightness is not exhibited. In addition, when the hydrogenated petroleum resin is used together with the ester resin and the reinforcing resin as in Examples 1 and 2, it has excellent bonding strength and weatherability. However, when petroleum resin is used as in Comparative Examples 5 and 6, the bonding strength and weather resistance are poor I could confirm.

On the other hand, even when the hydrogenated petroleum resin, the ester resin and the reinforcing resin are used, the adhesive strength and the night reflex reflection brightness are lowered as in Comparative Example 1 when the content of the ester resin is less than 3% by weight based on the total weight of the total paint. In addition, when the content of the ester resin exceeds 6% by weight based on the total weight of the entire paint, it is confirmed that the weather resistance is lowered as in Comparative Example 2.

If the content of the reinforcing resin is less than 2% by weight based on the total weight of the entire paint even if a hydrogenated petroleum resin, an ester resin and a reinforcing resin are used as in the case of the ester resin, low temperature impact resistance (cold resistance) It was confirmed that the bonding strength and stain resistance were lowered as in Comparative Example 4. [

[ Experimental Example  2: Containing glass beads Fusion type  Characteristic evaluation of paint]

Glass-like balls having a refractive index as shown in Table 2 below were blended into a fusion-type coating material having the same composition as in Example 1 of Table 1 to prepare fusion-type coatings containing glass beads of Examples 3 to 8. The above-mentioned night retroreflective brightness was measured using the coating film obtained from the above-mentioned fusion-type paint, and the results are shown in Table 2. [

Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 Plain glass beads
(Refractive index: 1.5) 10 30 20 30 15 25 High-refractive-index glass
(Refractive index: 1.7 to 1.9) 10 10 0 0 5 5 By Revolutions
Night reflex reflection luminance
(mcd / lxm ² ) 20 million 400 341 158 179 237 223 70 million 390 352 132 173 215 187

(Unit:% by weight based on total paint weight)

As shown in Table 2, it is understood that Examples 3, 4, 7, and 8, in which glass beads having two kinds of refractive indexes are blended, have higher nighttime retroreflective brightness values than Examples 5 and 6 in which glass beads having one kind of refractive index are blended Respectively. The higher the content of added glass beads, the higher the nighttime retroreflective brightness. However, in Example 8, general glass beads were added to Example 7, but the night reflex reflection brightness value was lower than that in Example 7. In Example 4, general glass beads were added more than Example 3, It was confirmed that the mixing ratio of the glass beads having two kinds of refractive indexes influences the brightness more than the addition amount of the whole glass beads.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, Of the right.

Claims (7)

15 wt% of a hydrogenated dicyclopentadiene resin, 3 wt% or 6 wt% of an ester resin, 3 wt% of an amorphous poly-a-olefin resin, and 10 to 40 wt% of beads based on the total weight of the entire paint,
Wherein the beads include glass beads having a refractive index of 1.5 to 1.6 and glass beads having a refractive index of 1.7 or more in a weight ratio of 3: 1 or 1: 1.
delete The method according to claim 1,
The ester resin may be any one selected from the group consisting of a hydrogenated hydrocarbon rosin ester resin, an acrylic rosin ester resin, a disproportionated rosin ester resin, a dibasic acid modified rosin ester resin, a polymerized rosin ester resin, a phenol modified rosin ester resin, Fused paint for road surface marking.
delete delete delete The method according to claim 1,
Wherein the beads are contained in an amount of 15 to 30% by weight based on the total weight of the whole paint.